No whatever it is they can handle it

Big boy nods at Biter and the two of them walk slowly down the hallway. When they reach the end he peers around the corner and into Evelyn's lab. What he sees surprises him.

Evelyn is bent over the lab table her tits out and her lab coat pushed over her back and off to the side. A young man with brown hair stands behind her his shirt pulled up over his stomach and held in places by his chin. Small wet slaps accompany the minute shaking of Evelyn's tits. She looks incredibly disappointed. He looks like he's about to loose control. Biter and Big boy exchange a look before stepping out in front of the door way.

When Evelyn sees them her face lights up. The boy behind her doesn't notice them as his eyes are scrunched shut as he struggles not to cum. Evelyn reaches back, puts a hand on his chest, and tries to push him off her. The boy grabs her hips tight and thrusts into her as deep as he can go and whimpers. Evelyn's body barely moves as he does this and she lets out an exasperated sigh. His eyes open and he gasps in surprise. He stumbles backwards and stammers "Mu-mu-mutants!"

Evelyn rolls her eyes at him and says "Yes little boy, mutants. Did no one tell you what I was doing here in this lab? Interns I swear. Let me introduce you to Subject 101, my pride and joy."

The boy looks hurt at her remarks and his piddling erection shrinks with shame. His face pales when he notices both mutants are naked, significantly larger then he is hard, soft.

Evelyn comes around the table, her hair a little disheveled but her glasses still in place. Besides her lab coat and tight black tank top pulled down to expose her tits, she is naked. Like the other women she is already sporting a baby bump although it's a little harder to see on her thick frame. Her scent too is diminished although still strong enough to get Big boy hard. Big boys eyes wander down to Evelyn's sodden cunt and he notes the tiniest trickle of thin, almost clear semen drip out of her.

She makes her way over to where big boy is standing and presses her body against his right flank. She wraps one leg around his right thigh and begins to grind her pelvis into him. She plays with big boys massive 18 inch erection as she looks up at home. She pouts and her puppy dog eyes are magnified by her glasses. In an overly affectionate tone she says "Mama Evelyn knew her big boy wouldn't leave her alone. Not after her put a bun in her oven. I didn't expect this side effect but you're the only one who can do it for me now Big boy. Are you gonna help mama out, huh?"

Big boy says, "You help Big boy's brother Biter first. He need hard cock and big balls like me to breed women and grow my tribe."

Evelyn beams up at him and says "You are such a good boy. You brought your friend to Mama so she could help him out. I'll be sure to do that right away sweetie but it takes a long time. I can't wait that long. I need you now. Can't you feel how wet I am. Isn't my scent just driving you wild."

Big boy holds firm and tells her that she will help him first and then he'll fuck her while they wait for the treatment to finish.

"Fine" she says taking her hand off his cock. She brings it up to her face and slowly drags her tongue across her palm. Her whole body shudders and she lets out a small moan. "But you better give it to me good". Evelyn turns and barks orders at the intern. The two of them prepare the serum over the course of an hour and then draw it into a needle. Evelyn tells Biter to lay down on the table and locks him in place. This time she also has the intern wrap chains around his chest to make sure he doesn't break free. She injects the modified FEV into Biter's neck. Biter jolts, and his jaw clenches shut. Waves ripple down through his veins, traveling his body and eventually to his cock which begins to pulse. His hips raise off the table and he lets out a agonized yell. Evelyn gives him a second injection, this time sedatives, and his hips slowly begin to lower back down to the table as his breathing steadies and he eventually falls asleep.

With that done Evelyn turns to Big boy and a playful smirk spreads across her face. "You've got a promise to keep Big boy. Let's retire to my quarters while your friend sleeps it off. He'll be fine in an hour or two." She then turns to the intern who flinches when she calls out to him, "And you boy, I want you to follow. Were going to test the effects of my modified FEV and I need you to take notes. I was...distracted during the first round of observation so we have a lot to make up for". The intern gulps but grabs and clipboard and looks ready to do as she asks.